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| author | Yafang Shao <laoar.shao@gmail.com> | 2018-07-01 23:31:30 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-02 22:40:56 +0900 |
| commit | d6f19938eb031ee2158272757db33258153ae59c (patch) | |
| tree | 46cfa82e8e2c6718f04c7246d73273033d88bb93 /include/trace | |
| parent | 335c997dce5c448ee06b3fd4dfe49fc7279f73ce (diff) | |
| download | linux-d6f19938eb031ee2158272757db33258153ae59c.tar.gz linux-d6f19938eb031ee2158272757db33258153ae59c.tar.bz2 linux-d6f19938eb031ee2158272757db33258153ae59c.zip | |
net: expose sk wmem in sock_exceed_buf_limit tracepoint
Currently trace_sock_exceed_buf_limit() only show rmem info,
but wmem limit may also be hit.
So expose wmem info in this tracepoint as well.
Regarding memcg, I think it is better to introduce a new tracepoint(if
that is needed), i.e. trace_memcg_limit_hit other than show memcg info in
trace_sock_exceed_buf_limit.
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/sock.h | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/include/trace/events/sock.h b/include/trace/events/sock.h index 3176a3931107..a0c4b8a30966 100644 --- a/include/trace/events/sock.h +++ b/include/trace/events/sock.h @@ -35,6 +35,10 @@ EM(TCP_CLOSING) \ EMe(TCP_NEW_SYN_RECV) +#define skmem_kind_names \ + EM(SK_MEM_SEND) \ + EMe(SK_MEM_RECV) + /* enums need to be exported to user space */ #undef EM #undef EMe @@ -44,6 +48,7 @@ family_names inet_protocol_names tcp_state_names +skmem_kind_names #undef EM #undef EMe @@ -59,6 +64,9 @@ tcp_state_names #define show_tcp_state_name(val) \ __print_symbolic(val, tcp_state_names) +#define show_skmem_kind_names(val) \ + __print_symbolic(val, skmem_kind_names) + TRACE_EVENT(sock_rcvqueue_full, TP_PROTO(struct sock *sk, struct sk_buff *skb), @@ -83,9 +91,9 @@ TRACE_EVENT(sock_rcvqueue_full, TRACE_EVENT(sock_exceed_buf_limit, - TP_PROTO(struct sock *sk, struct proto *prot, long allocated), + TP_PROTO(struct sock *sk, struct proto *prot, long allocated, int kind), - TP_ARGS(sk, prot, allocated), + TP_ARGS(sk, prot, allocated, kind), TP_STRUCT__entry( __array(char, name, 32) @@ -93,6 +101,10 @@ TRACE_EVENT(sock_exceed_buf_limit, __field(long, allocated) __field(int, sysctl_rmem) __field(int, rmem_alloc) + __field(int, sysctl_wmem) + __field(int, wmem_alloc) + __field(int, wmem_queued) + __field(int, kind) ), TP_fast_assign( @@ -101,17 +113,25 @@ TRACE_EVENT(sock_exceed_buf_limit, __entry->allocated = allocated; __entry->sysctl_rmem = sk_get_rmem0(sk, prot); __entry->rmem_alloc = atomic_read(&sk->sk_rmem_alloc); + __entry->sysctl_wmem = sk_get_wmem0(sk, prot); + __entry->wmem_alloc = refcount_read(&sk->sk_wmem_alloc); + __entry->wmem_queued = sk->sk_wmem_queued; + __entry->kind = kind; ), - TP_printk("proto:%s sysctl_mem=%ld,%ld,%ld allocated=%ld " - "sysctl_rmem=%d rmem_alloc=%d", + TP_printk("proto:%s sysctl_mem=%ld,%ld,%ld allocated=%ld sysctl_rmem=%d rmem_alloc=%d sysctl_wmem=%d wmem_alloc=%d wmem_queued=%d kind=%s", __entry->name, __entry->sysctl_mem[0], __entry->sysctl_mem[1], __entry->sysctl_mem[2], __entry->allocated, __entry->sysctl_rmem, - __entry->rmem_alloc) + __entry->rmem_alloc, + __entry->sysctl_wmem, + __entry->wmem_alloc, + __entry->wmem_queued, + show_skmem_kind_names(__entry->kind) + ) ); TRACE_EVENT(inet_sock_set_state, |